Antarctica a viciously inhospitable land, averaging a balmy -70 degrees F in the continent's interior. That's precisely where an intrepid band of American scientists have dug clean through 3405 meters of ice sheet, in an effort to research an eon's worth of climate change. To do it, they used this one-of-a-kind coring machine.

The bike fitting was once a mysterious process. You'd get your limbs measured, saddle up, and ride off. But there are so many variables in a bike's fit, and some have nothing to with the length of your limbs.

You're not going to walk away with an in-depth knowledge of how to build your own digital camera from watching this video. But Canon's behind-the-scenes peek
at what goes into building and designing its digital cameras and lenses is still pretty fascinating if you're into photography.

Apparently, some people love the Pentax DSLRs because they can stand sand storms and heavy rain. I never imagined they could be subjected to this kind of hardcore testing. That's probably why US Army soldier Alex Jansen, now deployed in Afghanistan, loves them.